Pulp-flaker.



No. 868,063. PATENTED OCT. 15,1907.V

. W. ANGUS.

' PULP FLAKER.

APPLIOATION FILED 11u26. .1902. l

2 SERENA-SHEET 1.

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ing the fragments.

UNITED sTATEs PATENT oEEIoE.

PULP-MAKER.

spee'iseation of Letters Patent. c

Patented Oct. 15, 1907.

Application iled May 26, 1902. Serial No. 109.103.

To all whom it may concern:

Be itknown that I, WILLIAM'ANGUS, of the city of Montreal, in the district of Montreal and Province of Quebec, Canada, manager, have invented certain new and useful Improvements in Pulp-Flakers; and I do hereby declare that the following is a full, clear-,fand exact description of the same. v

My invention relates to the treatment of the sheet pulp as it is fed from the wet machine upon the felt, and it has for its object to break the sheet pulp into flakes for drying purposes.

vThe invention may b e said briefly to consist in providing means for breaking the sheet pulp into fragments without injuring-the fiber thereof by acting upon the edges only of the portions thereof constitut- More specifically speaking `the invention may be ysaid briey to consist in mounting one or more combs adjacent to a take-up roll for picking up the pulp from the felt, and operating samexto act upon the sheet'pulp upon the take-up roll and detach fragments therefrom, said fragmentslbeing projected into a heated chamber wherein they are dried and from which said dried fragments may be fed to any suitable baling press or receptacle. y

For full comprehension, however, of my invention reference must be had to the accompanying drawings o forming a part of this specification inwhich like symbols indicate the same parts and wherein Figure 1 is a side elevation of a portion of a wet machine with myinvention applied thereto; Fig. 2 is an enlarged transverse vertical sectional view thereof taken on line A, `B, Fig.` 1, looking in the direction indicated; Fig. 3 a longitudinal vertical sectional view theretof taken on line G, D, Fig. 2 Fig. Il is a detail perspective view of my improved flaking roll removed,

' and Fig. 5 is a detail longitudinal vertical sectional view of the heater. l Y

In order that the invention may be thoroughly understood it may be pointed out that the sheet of pulp carried lupon thefelt of a wet machine', `is of exceedingly loose texture, and so thin as to be almosttransparent, and, consequently it is most delicate and` fragile and when in its lwet state, as it lies upon the felt, is

veryeasily broken into Hakes or fragments, in fact it isl difficult to remove it whole, in a self supporting way, from the felt. r

My improved flaker which is particularly adapted to breaking the sheet pulp, when in the above describedk condition, into flakes or fragments without injuring the fiber of the pulp, consists of a take-up roll b bearing on the felt c drawn from the wet machine (not shown) by roll a. This take-up roll is preferably provided with a tight fitting jacket e of textile material, and it is mounted rigidly upon a shaft f, having a pair of pulleys g rigidly upon the opposite ends thereof and driven from pulleys t' upon the shaft h of the felt roll by bands j.

' ,A blast pipe lc extends transversely of the take-up roll in a position to have its mouth m face in adirection tangential of anda short distance from the surface lof the take-up roll, this blast pipe being fed from a blower n through a pipe o which passes through a furnace p to be presently further alluded to.

A bafHe-plate q deflects the blast from the take-up roll, and a strip or knife r, constituting a doctor, doctors the sheet pulp off the take-up roll under certain 'conditions This doctor and the bafiie-plate are supported by a frame s. Aswinging counter shaft u is rotatably mounted in the lowerends of a pair of arms o between which it lacts as astay, and the upper ends of said arms are pivoted preferably upon a pair of stub-axles 'w which may be carried upon the wall of the drying chamber to be presently described. Upon each of these stub-axles and outside of the arms 1) is rotatably mounted a duplex pulley 2 and 3, andupon each' end of the counter shaft u and also outside of the arms fu is rigidly mounted a pulley 4, while bands 5 operatively connect the portions 3 of the duplex pulleys to the pulleys 4.

A roller 6 is lmounted rigidly upon `the countershaft `o. and is provided at diametrically opposite sides with a pair of combs 7 and 8, respectively, the teeth of one comb being in the circumferential plane of the spaces between the teeth of the other, and the ends of the teeth of each are preferably bent towards the direction of rotation of their ycarrying rolL and slightly sharpened. A second counter-shaft 10 is rotatably mounted in bearings 12 also preferably upon the dry-r ing chamber, and has a pair of pulleys 13 rigidly `thereon one in line with each of the portions 2 of the vduplex pulleys to which they are connected by bands 14. A pair of small pulleys 15 are mounted upon the ends of this shalt inline with a pair of large pulleys 16 upon the shaft of the take up roll and which are connected to said smallpulleys by crossed bands 17 while Ta pair of three-throw cams 18 which are secured rigidly upon said last mentioned counter-shaft and in line with the swinging arms o, impart an oscillatory movement to the arms, anti-friction rollers 19 Vupon the arms receivingthe thrust ofv said cams, and retractile helical springs 20` yieldingly maintaining said Lanti-friction rollers constantly in engagement with said cams. y y

The drying chamber consists of walls 28 and top 29 and is. preferably rectangular in plan' view, and a duct 30 leads from within close proximity of the blast pipe to the upper end of said chamber and extends in width from end to end of said blast pipe, which is also preferably the width of the felt chamber. The chamber is heated by means of a stove or heater 1ocated in a small extension 3l which communicates With the interior of the chamber and said stove or heater is constructed with a zig-zag flue 32 in its upper portion, with one end of which a pipe 33, leading from a blower n, is connected, while a second pipe 35 leads from the opposite end of this zig-zag fine to the blast pipe. The stove or heater is furnished with an ordinary fire grate 36 and `tire and ash pit doors 37 and 38, respectively, while the products of Acombustion after passing around the tiue 32 are taken ott by means of pipe 39.

A traveling table is located at the bottom oi the drier and constitutes a false bottom upon which the ilakes oi dried pulp fall and whereby they are carried youtside oi the chamber. This traveling table consists of an endless apron 40 passing around rollers 4l driven by a belt 42 from a pulley 43 upon the 'shaft of the felt roll, said apron projecting through an aperture in the lower portion oi one of the side walls.

The operation of my improved tlaker is as follows: The take-up roll lifts the sheet pulp from the felt and winds it upon itself, and as the roll passes the pointy in the arc of oscillation oi the rapidly rotating swinging shaft carrying the comb-roll, such comb-roll is intermittently moved by the cams to a position to have its teeth pass in close proximity to the face of the take-up roll, which action will cause the portion oi the sheet pulp in advance of said arc, to be flicked from said take-up rolliirst by one series of comb teeth and then by the other series, the intervals between the approaches oi the comb-roll being o sufficient duration to allow about one half inch, full width of the machine, of the sheet pulp to pass the arc. The portions thus 'fiicked ofi are in the form of flakes or fragments, and are blown by the hot blast into the top of the drying chamber wherein the heat takes up what moisture is not absorbed by the blast and they fall upon the traveling apron which delivers th em into any suitable receptacle.

The object in providing the doctor is to cause any portions oi the sheet pulp not icked from the roll by the comb teeth to be doctored ofi and caused to fall back into the hot blast the impact of which will fiake said portion thus disengaged and precipitate the Hakes into the drier.

When the sheet pulp is oi excessive fragility the belt l7 driving the camshaft can be shipped from either of its pulleys when the comb roll is in its position away from the take-up roll. The sheet pulp will then be doctored from said take-up roll and fall over the bathe-plate into the hot blast which will tear this portion of the sheet from the main portion and practically shatter it into tialaes, to be iollowe-l similarly by other portions.

lt is obvious that the hot blast and the comparatively high temperature in the chamber will cause the flakes of pulp to fall upon the bottom of the tank in a perfectly dry state, or, by reducing the temperature of the blast and interior of the chamber the flakes can be delivered with any degree of moisture required. Or ii desired a cold blast alone may be utilized when the pulp needs but slight drying.

What I claim is as ollowsz- 1. A iiaker comprising a carrier for the material to be laked; a take-up rollfor lifting said material from its carrier; a roll having an isolated row of resilient metallic teeth in the form of a comb upon and extending axially of the perimeter thereof; means for rotating said comb-roll, and means for drying said flakes, substantially as described and for the purpose set forth,

A ilaker comprising a carrier for the material to be tlaked; a take-up roll for lifting said material from its carrier; a roll parallel to the take up roll and a pair of comb-like devices carried by the last mentioned roll atr dia,- metric-ally opposite sides thereof and extendingaxially along the face of the said roll, each comb-like device consisting of an isolated row of resilient itat metallic teeth, and means for rotating the comb-roll, substantially as dcscribed and for the purpose set forth.

3. A aker comprising a carrier for the material to be laked; a take-up roll for lifting said material from its carrier; a device adapted to iiick the lnaterial in flakes from said take-up roll; and means for causing a blast to act upon said flakes as they are detached by said device` substantially as described and for the purpose set forth.

4. A tlaker comprising a carrier for the material to be tlakcd; a take-up roll for lifting said material from its carrier; a roll having a comb upon and extending axially of the perimeter thereof; means for intermittently moving said comb-roll towards said take-up roll; means for rotating said comb-roll to, when adjacent to said take-np roll, break the material thereon into iiakes; and means for dry ing said flakes, substantially as described and for the purpose set forth.

5. The combination with the felt roll of a pulp making Wet-machine, of a take-up roll bearing upon the felt upon said felt roll; means for driving said rolls in opposite drections; a swinging carrier adapted to swing in au are. lntersecting the perimeter of said take up roll a roll mounted in the end of said swinging carrier; a pair of combs mounted upon and extending axially of said last. mentioned roll one at each side thereof and with the teeth of one in circumferential line with the spaces between thc teeth of the other; a counter-shaft; means for supporting said counter-shaft adjacent to said swinging carrier a cam upon said counter-shaft; a retractile helical spring vieldingly retaining said swinging carrier in contact with said cam; a band connectingr the take-up roll to said counter-shaft; a shaft mounted in the line at which said swinging carrier is pivoted; a pulley upon said shaft; a band connecting said counter-shaft to said last mentioned shaft; a band connecting; said last mentioned shaft to the comb-roll and means for causing a blast to project: across the point at which the teeth of said combs are located when adjacent to the take-up roll; and means for heatingl said blast, subA stantially as described and for the purpose set torth.

(i. A linker comprising a roll carrying the material to be tlaked; a device for removing the material intact; from said roll; and means for causing a blast to impinge upon the material ythus removed, for the purpose set forth.

7. A tiaker comprising a roll carrying the material to bc iiaked; a doctor extending longitudinally of said loll in contact with the perimeter thereof` for removing the material intact therefrom', and means for causing a blast to impinge upon the material thus removed. substantially as described and for the purpose set forth.

S. A drier comprising, in combination with a roll. a device for removing the material to be flaked from said roll a blast pipe, the blast from said pipe impinging upon the material thus removed; a drying chamber; a duct leadingr from a point in line with said blast to the upper end ol' said drying chamber; a heater comnninicating with said drying chamber a blower a pipe leading from said blower to said heater; a tine extending through said heater and communicating at one end with said pipe'. and a second pipe leading from the opposite end of said Ilue to said blast pipe. substantially as described and for the purpose set. forth.

In testimony whereof, I have aiiixed my signature. in presence ot two witnesses.

WILLIAM ANGUS.

Witnesses WILLIAM L. MCFnivr, Fano. J. Salins. 

